Activating this ability initiates an attack chain:
attack_1 -> 0.91 s -> attack_2 -> 0.91 s -> attack_3 -> 1.17 s -> [repeat]
attack_1: Hits all enemies in melee range in a large arc centered on the primary target for 160% weapon damage (spirit). Receives +6.25% to damage_multiplier per 1 charge.
attack_2: Hits all enemies in melee range in a large arc centered on the primary target for 160% weapon damage (spirit). Receives +9.375% to damage_multiplier per 1 charge.
attack_3: Hits all enemies in melee range in a large arc centered on the primary target for 160% weapon damage (spirit). Receives +9.375% to damage_multiplier per 1 charge.
Each attack in the chain depletes the amount of remaining charge by 50%.
For example, an attack made with 80 charge will deplete charge to 40. The next attack will deplete charge to 20, and so on.
For the purposes of calculating the bonus to damage_multiplier, the relevant number is charge remaining before the attack is made, not the amount of charge depleted by the attack.
Attacks that do not connect with any enemy will not deplete charge. However, blocked attacks will still deplete charge.
Every successful hit made by the caster using autoattacks and abilities other than Spirit Blade increases charge by 5.
The extra hit from runes does not increase charge.
[Mistake - Patch 11] The in-game description incorrectly lists the ability_multiplier of Spirit Blade attacks as 150%.
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https://bsn.boards.net/thread/472/dai-guide-bugs-combat-mechanics